code: def _get_threadpool_controller():
      if not hasattr(threadpoolctl, "ThreadpoolController"):
          return None
  
      if not hasattr(sklearn, "_sklearn_threadpool_controller"):
          sklearn._sklearn_threadpool_controller = (
              threadpoolctl.ThreadpoolController()
          )
  
      return sklearn._sklearn_threadpool_controller
  
file_path: scikit-learn/sklearn/utils/fixes.py
imports: import numpy
  import scipy
  import scipy.sparse.linalg
  import scipy.stats
  import threadpoolctl
  import sklearn
  from ..externals._packaging.version import parse
  from .deprecation import deprecated
label_desc: Use image node_id 3 for calling a global function with example usage: _get_threadpool_controller() and returns: sklearn, None